.video_class{
    width: 1528px;
    height:466px;
    display: flex;
    /*background-color: black;*/
}
.video_left{
    width: 545px;
    height: 390px;
    margin-left: 60px;
    margin-bottom: 75px;
    background-color: black;
    border-radius: 6px;
}

/*这是第三层视频左边的部分*/
.video_left{
    display: flex;
    flex-direction: column;
}
.video_left_top{
    height: 307px;
    margin-bottom: 17px;
    /*background-color: #b3b3b3;*/
}
.video_left_top img{
    height: 307px;
    width: 545px;
    border-radius: 8px;
}
.video_left_middle{
    height: 28px;
    margin-bottom: 11px;
    /*background-color: #fda863;*/
    padding: 0 15px;
    display: flex;
    align-items: center;
}
.video_left_middle_left{
    width: 445px;
    height: 25px;
    /*background-color: rebeccapurple;*/
}
.video_left_button{
    width: 28px;
    height: 28px;
    border: none;
    background-color: rgba(131, 130, 130, 0.5);
    margin-right: 12px;
    padding: 0;
    border-radius: 7px;
    color: white;
}
.video_left_button:hover{
    background-color: #717171;
}
#big_video_font{
    font-size: 19px;
}
.video_left_middle_right{
    display: flex;
    width: 68px;
    height: 28px;
    /*background-color: #e3dbdb;*/
}
.video_left_bottom{
    height: 16px;
    /*background-color: yellow;*/
    padding: 0 15px;
    display: flex;
}
.video_left_ul{
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 144px;
    height: 16px;
}
.video_left_ul li{
    margin: 0;
    padding: 0;
    width: 16px;
    height: 16px;
}
.video_left_ul li div{
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #716f6c;
}
/*这是第三层视频左边的部分*/

/*这是第三层视频中间的部分*/
.video_center{
    box-sizing: border-box;
    width: 848px;
    height: 466px;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding-left: 20px;
    /*background-color: lightgreen;*/
    gap: 20px;
}
.video_center ul{
    display: flex;
    gap: 20px;
    margin: 0;
    padding:0;
}
.video_center ul li{
    width: 263px;
    height: 223px;
    /*background-color: #b3b3b3;*/
    display: flex;
    flex-direction: column;
    margin: 0;
    padding:0;
}
.video_button_right{
    height: 466px;
    width: 60px;
    display: flex;
    flex-direction: column;
    justify-content: start;
    /*background-color: #717171;*/
}
.video_center ul li a{
    width: 263px;
    padding: 0;
}
.video_img{
    width: 263px;
    height: 148px;
    /*background-color: red;*/
    margin-bottom: 10px;
    border-radius: 6px;
}
.a_top{
    height: 43px;
    /*background-color: green;*/
    margin-bottom: 5px;
}
.a_top span{
    color: black;
}
.a_bottom{
    display: flex;
    height: 17px;
    /*background-color: yellow;*/
    gap: 3px;
    padding: 0;
}
.a_bottom span{
    color: #979797;
}
.a_bottom img{
    width: 17px;
    height: 17px;
}
.a_bottom_div{
    font-size: 13px;
    height: 17px;
    margin-right: 3px;
    padding: 0;
    border: 0;

}
.a_bottom_div span{
    background-color: #ffeee6;
    color: #fba057;
    border-radius: 3px;
}
/*这是第三层视频中间的部分*/
.button_container{
    height: 392px;
    width: 60px;
    /*background-color: lightblue;*/
    display: flex;
    flex-direction: column;
    align-items: center;
}
.video_right_button{
    padding: 10px 5.5px;
    background: none;
    border: none;
    width: 40px;
    height: 84px;
}
.video_right_button{
    border: 1px solid #acaaaa;
    border-radius: 6px;
}
.video_right_button img{
    padding-bottom: 5px;
}
.video_right_button span{
    font-size: 12px;
    writing-mode: vertical-rl;
}